Aluminum trailer have to be able to flex. welding the cross member onto the i-beams prevents their capability to flex thus causing the i-beam to crack because of stress. the heating of the aluminum through welding creates a lot of localized heat and also sets up internal stresses that can lead to cracks in the future.. Your explanation of the metallurgy behind aluminum cracks might be lost on the local manufacturer of boat trailers. there are a many technical people on this site who appreciate your detailed explanation.. This replacement boat trailer guide on pole is manufactured out of 1 1/2" square aluminum tubing with 1/8" wall thickness. it measures 46" tall and has a 24.5" long leg for easy width adjustment to fit the sides of your boat as is goes onto your trailer. it has an aluminum welded tab to serve as a stop for your pvc..
The strong welded aluminum frame, made from either i-beam or patented i-tube, superior components, and fit-specific engineering, ensure years of dependable safety for your boat. as always, our base model provides a complete package, or upgrade your trailer with our many available options.. The first crack i had to do 8 trips back and forth, getting trailer form factory, come back, load boat and take to factory, come back, go out pick boat up, come back, go to factory and drop off trailer, come back home.. I have had three aluminum boat trailers over the last 15 years, all from rolls axle. each trailer has held up extremely well in every aspect. my first aluminum boat trailer, though lasted and was strong until the day i sold her, she aged in the form of slight pitting and white oxidation from corrosion, partly due to my lack of maintenance. keep.
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